IteratorToList.js 784 B

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  1. 'use strict';
  2. var $TypeError = require('es-errors/type');
  3. var IteratorStep = require('./IteratorStep');
  4. var IteratorValue = require('./IteratorValue');
  5. var isIteratorRecord = require('../helpers/records/iterator-record');
  6. // https://262.ecma-international.org/15.0/#sec-iteratortolist
  7. module.exports = function IteratorToList(iteratorRecord) {
  8. if (!isIteratorRecord(iteratorRecord)) {
  9. throw new $TypeError('Assertion failed: `iteratorRecord` must be an Iterator Record'); // step 1
  10. }
  11. var values = []; // step 1
  12. var next = true; // step 2
  13. while (next) { // step 3
  14. next = IteratorStep(iteratorRecord); // step 3.a
  15. if (next) {
  16. var nextValue = IteratorValue(next); // step 3.b.i
  17. values[values.length] = nextValue; // step 3.b.ii
  18. }
  19. }
  20. return values; // step 4
  21. };